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In the context of cryptography, 'confusion' refers to a principle that aims to make the relationship between the plaintext and ciphertext as complex as possible. This is achieved through the use of algorithms that obscure the data, making it difficult for an adversary to analyze and decipher the information.

The correct answer highlights that confusion involves obfuscating data through rearrangement. This is a fundamental aspect of encryption techniques, where confusion serves to thwart attackers by introducing complexity in how the original data can be discerned from its encrypted form. A well-designed encryption scheme will ensure that small changes in plaintext result in significant changes in the ciphertext, thus enhancing security.

Other options do not accurately represent the concept of confusion in cryptography. For example, simply simplifying encryption methods or focusing on rapid decryption do not align with the principle of confusion, which prioritizes security and obscurity over ease of access or speed.